INDEX 459 



PAGE 



Impregnation of windings gg 



Inductance reaction 213 



Induction, action of self . 213 



Induction generator 349 



motor, effect of rotor resistance on speed of 344 



general construction 331-336 



generation of rotating magnetic field in 334 



rotor speed 340 



running characteristics of 343 



single phase 347 



speed control 345 



speed of rotation of magnetic field in 335 



starting characteristics 341 



Inductive circuit, magnitude of current in an 215 



Inductor, meaning of the term 22 



number of active, on an armature 99 



Insulation of armature windings 88 



Insulator 4 



Iron loss, in armature core 20 



in transformer core 293 



measurement of, in a transformer 299 



Joule, unit of energy 13 



Joule's law for heat generated by a current 11 



Lap winding for an armature 77 



Lamination of armature core 37 



of a transformer core 293 



Laminations, how built up around transformer coils 284 



Leakage coefficient 66 



flux 33, 296 



Load curve for a station 141 



Location of armature faults 447 



proper, for electrical machinery 428 



Losses, determination of, in a transformer 298 



occurring in a dynamo electric machine 188 



variation of, with load 188 



occurring in a transformer 292 



Magnetic circuit, law of 16 



effect of an electric current 1 



field, meaning of 15 



